Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4840390 | Symmetrically modular wheelchair | Walter G. Lockard, Wieslaw Kosc | 1989-06-20 |
| 4813693 | Adjustable child's wheelchair | Walter G. Lockard, Herbert J. Hoekstra, Douglas M. Nickles | 1989-03-21 |